I have a Pavillion 11x365,
from day one when playing videos via the web I get an audible crackling, having contacted Hp support initially the Drivers were re-installed which did not work followed by a system recovery which has also failed to solve the problem, I returned the notebook for a replacement having received the replacement it also displays the same problem. using headphones or Bluetooth speaker, the crackling is not present.
It has been suggested it may be Adobe flash player but reading forums is a mine field of technical jargon which does not really help me much.
Hp support have been great I have to say but I need to try and solve this on my own.